Quick answers
- Which hospitals does Cara Hahs work at?
- Medicare's official clinician data lists Cara Hahs at 2 hospitals: Mercy Hospital South and Mercy Hospital St Louis. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Cara Hahs see patients?
- Medicare's clinician data lists 1 practice location in Saint Louis, MO. Call before your visit to confirm the address.
- What is Cara Hahs's specialty?
- Medicare lists General Surgery as the primary specialty.
- Does Cara Hahs accept Medicare assignment?
- Yes. Medicare's clinician data says Cara Hahs accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Cara Hahs?
- (314) 251-8001, as listed in official Medicare / NPI Registry data.
- What is Cara Hahs's NPI number?
- 1427031129. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Cara Hahs works
Medicare's Facility Affiliation Data lists Cara Hahs at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Mercy Hospital SouthSaint Louis, MO · Acute Care Hospital · CCN 260077
- Mercy Hospital St LouisSaint Louis, MO · Acute Care Hospital · CCN 260020
Practice locations
Addresses where Cara Hahs is enrolled with Medicare (CMS data updated 2026-10-02).
- 621 S New Ballas Rd, 260a Mercy Clinic Breast Surgery Tower ASaint Louis, MO 63141 (314) 251‑8001
Group practices
Medicare enrollment lists Cara Hahs as a member of this group (CMS data updated 2026-10-02).
- Mercy Clinic St Louis Cancer and Breast Institute LLC10 clinicians in the group
Specialties
- General Surgeryprimary
Other general surgeons in Saint Louis
Clinicians with the same Medicare primary specialty in Saint Louis, MO — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of South Carolina School Of Medicine |
| Graduation year | 1997 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1427031129 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians